While the Bifen L/P Insecticide Granules is a great product for armyworms, you will not get a lot of coverage from it. However, the liquid version Bifen IT would be a great alternative for armyworm control and would also cover more area.
For low or general maintenance applications, Bifen IT is applied at 0.18 - 0.25 fluid oz in 1 gallon of water per 1000 sq. ft (8 fl oz to 11 fl oz in 44 gallons of water per acre).
For severe/higher populations or when grass is taller than 1 inch, apply Bifen IT at 1 fl oz in 1-2 gallons of water per 1000 sq ft (44 fl oz in 44 to 88 gallons of water per acre).
Please view the product label for more information.
Bifen L/P Insecticide Granules are applied using a lawn spreader to dry turf then immediately watered in with atleast 0.5 to 1 inch of rainfall or irrigation. Once the granules have disolved into the soil, it is safe for childen, pets and wildlife that may enter the treated area. This product could be a hazard to birds if the dry granule is swallowed but once they are watered any risk would not be an issue.
Bifen L/P Insecticide Granules is applied at 1.15lbs per 1000 sq ft for armyworms (50lbs per acre). You would use 16lbs to treat 14,000 sq ft for armyworms specifically.
For best results, the granules should be watered in immediately following the application with atleast ½ inch of rainfall or irrigation and should be reapplied every 30 days for control.
Please view our Armyworm Treatment Guide for more information.
One 25lb. bag of Bifen L/P Insecticide Granules covers 5,000-10,000 square feet.